Tissues - Differentiate plant and animal tissues and relate tissue structure to function

Tissue is a group of cells similar in structure and/or origin that work together to achieve a particular function.

Plant Tissues vs. Animal Tissues: Plants are stationary and require more supportive tissues (many are dead, like $Sclerenchyma$). Animals move and require more energy, thus most tissues are living (like $Muscular$ and $Nervous$ tissues).

Meristematic Tissues in plants are dividing tissues located at specific regions: $Apical$ (tips of stems/roots), $Intercalary$ (base of leaves/nodes), and $Lateral$ (girth/cambium).

Simple Permanent Plant Tissues: $Parenchyma$ (storage, $thin$ walls), $Collenchyma$ (flexibility, thickened at $corners$), and $Sclerenchyma$ (strength, $lignified$ walls).

Complex Permanent Tissues: $Xylem$ (transports $H_2O$ and minerals) and $Phloem$ (transports food/sucrose). They are called vascular tissues.

Animal Epithelial Tissue: Protective covering. Types include $Squamous$ (thin, flat for diffusion), $Cuboidal$ (mechanical support), and $Columnar$ (absorption/secretion).

Connective Tissue: Cells are loosely spaced in an intercellular matrix. Examples include $Blood$ (fluid $plasma$ matrix), $Bone$ ($Ca$ and $P$ hard matrix), $Cartilage$, $Ligaments$ (bone to bone), and $Tendons$ (muscle to bone).

Muscular Tissue: Responsible for movement via contractile proteins ($actin$ and $myosin$). Types: $Striated$ (voluntary), $Smooth$ (involuntary), and $Cardiac$ (heart rhythm).

Nervous Tissue: Neurons consist of a cell body ($cyton$), $axon$, and $dendrites$. They transmit electrochemical impulses at high speeds.

Structure-Function Relationship: The thinness of $Squamous$ epithelium facilitates a high rate of diffusion, while the $Lignin$ in $Sclerenchyma$ provides the mechanical rigidity needed to withstand gravity.